The Photocatalytic and Antibacterial Activity of Cu-Doped TiO2 Thin Films


  • Weerachai SANGCHAY Faculty of Industrials Technology, Songkhla Rajabhat University, Songkhla 90000
  • Lek SIKONG Department of Mining and Materials Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90110
  • Kalayanee KOOPTARNOND NANOTEC Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla 90110


TiO2, thin films, photocatalytic activity, antibacterial activity, Cu dope


Thin films of TiO2 and TiO2 doped with Cu were prepared by sol-gel method. The prepared films were calcined at the temperature of 400 °C for 2 h with the heating rate of 10°C/min. Physical properties as well as crystal compositions of the fabricated films were characterized by XRD, EDX SEM and AFM techniques. The results show that all samples have thickness range from 0.25 to 1.0 um. The film surfaces are typically uniform and dense with TiO2 nanoparticles. The photocatalytic activities of the thin films were also tested via the degradation of methylene blue (MB) solution under UV irradiation. Finally, antibacterial activity efficiency was evaluated by the inactivation of E.coli. It was observed that higher Cu concentration gives better photocatalytic activity. With the highest dopant concentration investigated in this experiment (TiO2-1.0Cu condition) the films show photocatalytic of 70 % and antibacterial activity of 100 %.


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How to Cite

SANGCHAY, W., SIKONG, L., & KOOPTARNOND, K. (2013). The Photocatalytic and Antibacterial Activity of Cu-Doped TiO2 Thin Films. Walailak Journal of Science and Technology (WJST), 10(1), 19–27. Retrieved from



Research Article